<template>
    <div id="root">
        <div class="todo-container">
            <div class="todo-wrap">
                <Top @func="add"></Top>
                <List :things="todos" :checkTodo="checkTodo" :deleteTodo="deleteTodo"></List>
                <Bottom :todos="todos" @checkAllTodo="checkAllTodo" @clearAllTodo="clearAllTodo"></Bottom>
            </div>
        </div>
    </div>
</template>

<script>
    import Bottom from "@/components/Bottom";
    import Top from "@/components/Top";
    import List from "@/components/List";

    export default {
        name: "app",
        components: {Bottom, Top, List},
        data() {
            return {
                todos: [
                    {id:'001', title:'抽烟', done:true},
                    {id:'002', title:'喝酒', done:false},
                    {id:'003', title:'开车', done:true}
                ]
            }
        },
        methods: {
            // 添加一个待办事项
            add(x){
                this.todos.unshift(x);
                console.log("我是APP组件，我收到了数据：", x);
            },
            // 改变一个待办事项的勾选状态：勾选或者取消勾选
            checkTodo(id) {
                this.todos.forEach((todo) => {
                    if (todo.id === id){
                        todo.done = !todo.done;
                    }
                })
            },
            // 删除一个待办事项
            deleteTodo(id) {
                this.todos = this.todos.filter((todo) => {
                    return todo.id !== id;
                });
            },
            // 全选 or 取消全选
            checkAllTodo(done) {
                this.todos.forEach((todo) => {
                    todo.done = done;
                })
            },
            // 清除所有已经完成的待办事项
            clearAllTodo() {
                this.todos = this.todos.filter((todo) => {
                    return !todo.done;
                })
            }
        }
    }
</script>

<style>
    /*base*/
    body {
        background: #fff;
    }

    .btn {
        display: inline-block;
        padding: 4px 12px;
        margin-bottom: 0;
        font-size: 14px;
        line-height: 20px;
        text-align: center;
        vertical-align: middle;
        cursor: pointer;
        box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
        border-radius: 4px;
    }

    .btn-danger {
        color: #fff;
        background-color: #da4f49;
        border: 1px solid #bd362f;
    }

    .btn-danger:hover {
        color: #fff;
        background-color: #bd362f;
    }

    .btn:focus {
        outline: none;
    }

    .todo-container {
        width: 600px;
        margin: 0 auto;
    }

    .todo-container .todo-wrap {
        padding: 10px;
        border: 1px solid #ddd;
        border-radius: 5px;
    }

    /*main*/
    .todo-main {
        margin-left: 0px;
        border: 1px solid #ddd;
        border-radius: 2px;
        padding: 0px;
    }

    .todo-empty {
        height: 40px;
        line-height: 40px;
        border: 1px solid #ddd;
        border-radius: 2px;
        padding-left: 5px;
        margin-top: 10px;
    }
</style>